I. M. . Ali and T. Y. . Ghawi, “On Closed Rickart Modules”, Iraqi Journal of Science, vol. 57, no. 4B, pp. 2746–2753, Feb. 2022, Accessed: Dec. 15, 2025. [Online]. Available: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6323